摘要
以成都市第六水厂的工艺出水和管网水为测试对象,研究了常规处理工艺对消毒副产物及其前体物的去除特性,分析了消毒副产物在管网中的变化规律,并且提出了控制饮用水中消毒副产物的对策。研究结果表明:①成都市自来水中消毒副产物的主要成分为卤乙酸;②常规处理工艺对三卤甲烷前体物和卤乙酸前体物均有很好的去除效果(去除率为50%左右),但对卤乙酸(HAAs)和三卤甲烷(THMs)却无去除作用;③预氯化产生的THMs、HAAs分别占管网中此类物质最高浓度的22%和50%;④应该以管网入口处三氯甲烷、卤乙酸的浓度作为整个管网的控制指标。
Test was made for the water from different treatment stage of Chengdu City No.6 Water Plant and the water from the pipe network respectively to investigate the removal effect of disinfection byproducts and its precursors by using conventional treatment process, and the analysis was made on the change of disinfection byproducts in pipe network, and finally the strategy was proposed for controlling the byproducts. The result showed that: (1) the main composition of disinfection byproducts in the water supply system is halo-acetic acid; (2) the conventional treatment process has good effect on removal of trihalomethane precursor and halo-acetic acid precursor with removal rate of 50%, but it can do nothing for removal of halo-acetic acid (HAAs) and trihalomethane (THMs); (3) THMs and HAAs produced in prechlorination process account respectively for 22% and 50% of their maximum concentration in the network; (4) the concentration of THMs and HAAs at the inlet of pipe network shall be used as index for concentration control of the whole network.
出处
《中国给水排水》
CAS
CSCD
北大核心
2003年第11期8-11,共4页
China Water & Wastewater
基金
国家自然科学基金资助项目(598780241)
关键词
常规工艺
消毒副产物
前体物
管网水
conventional treatment process
disinfection byproducts
precursors
water from pipe network
